1155198438492 has 48 divisors (see below), whose sum is σ = 3080585797632. Its totient is φ = 330050629440.

The previous prime is 1155198438481. The next prime is 1155198438539. The reversal of 1155198438492 is 2948348915511.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6568618 + ... + 6742190.

It is an arithmetic number, because the mean of its divisors is an integer number (64178870784).

Almost surely, 2^{1155198438492} is an apocalyptic number.

1155198438492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1155198438492 is an abundant number, since it is smaller than the sum of its proper divisors (1925387359140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155198438492 is a wasteful number, since it uses less digits than its factorization.

1155198438492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252818 (or 252816 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 60.

The spelling of 1155198438492 in words is "one trillion, one hundred fifty-five billion, one hundred ninety-eight million, four hundred thirty-eight thousand, four hundred ninety-two".